Diamond Dome

We produce ultra-thin, lightweight domes with extreme stiffness (Young’s modulus ~1,200 GPa) and high thermal conductivity, enabling pistonic motion up to and beyond 40 kHz with minimal breakup or distortion. Our domes are grown on precision substrates, chemically etched to form free-standing diaphragms, and customized for 5mm–160 mm voice coil assemblies. Ideal for high-end loudspeakers, studio monitors, and luxury automotive systems, SP3’s CVD diamond domes redefine high-frequency transducer performance with unmatched material science and acoustic engineering. Explore the synergy between our cutting-edge diamond dome technology and our capabilities in producing high-performance diamond wafers for various demanding applications.

We can customize Diamond Dome of different sizes, specifications and shape as per requirement.

Technical Specification

Thickness: ~50–500 μm
Dome Diameter: 25 mm (Customizable)
Surface Finish (RMS Roughness): < 10 nm
Speed of Sound in Material: ~18,000 m/s
Thermal Conductivity: > 1500 W/m·K
Thermal Expansion Coefficient: ~1 × 10⁻⁶ /K
Breakup Frequency (First Resonance): Typically > 40 kHz (depends on geometry)
Transparency: ~70% (for thin films, varies with thickness and method)